Using encryption methods like base64() or p,a,c,k,e,r to hide your code or otherwise make it human-unreadable is in violation of the repository guidelines, found at: http://wordpress.org/extend/plugins/about/guidelines/
In specific, the fourth guideline, which reads: "4. No obfuscated code."

It's fine to compress your code and minify, but it's not okay to hide it. All code must be human readable for inclusion in this repository.

When you've corrected your code, reply to this email with the updated code attached as a zip, or provide a link to the new code for us to review.